Improvement in feeding devices for grinding-mills



S. MIDDLETON. I Feeding-Devices for Grinding-Mills;

Patented Oct. 28,1873.

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UNITED STATES PATENT OFFIoE.

SIDNEY MIDDLETON, OF DUNKIBK, INDIANA, ASSIGNOR TO HIMSELF AND JACOBmoor, on SAME PLACE.

- IMPROVEMENT IN FEEDING DEVICES FOR GRINDING-MILLS.

Specification forming part of Letters Patent No. 143,989, dated October28, 1873; application filed May 24, 1672.

To all whom it may concern:

Be it known that I, SIDNEY MIDDLETON, of Dunkirk, county of Jay andState of Indiana, have invented certain Improvements in Apparatus forFeeding Grain, &c., to Grindtube, whence the screw feeder forces it downto the exit at the center of the bed-stone.

Figure 1 represents a set of burrs embodying my improvement, partiallyin sections.

A is the frame. B is the bed-stone. O is the revolving stone. D is thehopper. E represents a screw feeder, provided with two hinged joints, 6c, and on each of the joints are the arms J J. These arms extendoutward, so as to catch all of the grain or bran and force it down thechute by means of the screw, and deposit it between the stones 0 and B.The screw feeder is secured to the upper end of the spindle G at f, andrevolves with the upper stone.

I claim- The central screw feeder E, provided with hinged wing feeders JJ, in combination with the spindle G and hopper D, substantially as andfor the purpose set forth.

In testimony whereof I have signed myname to this specification in thepresence of two subscribing witnesses.

SIDNEY MIDDLETON.

Witnesses S. C. FRINK, G. R. ANDERSON.

